ScreenBuffer

Category: Terminal

Source: screen_buffer.dart

Classes

Cell

A single cell in the virtual terminal grid.

Constructor

Cell(this.char, {this.style})

Properties

Property	Type	Description
char	String
style	AnsiStyle?
operator	bool
hashCode	int get
hashCode	int get

ScreenBuffer

Virtual terminal buffer with diff-based rendering.

Maintains a double-buffered grid of [Cell]s. On each [flush], only cells that differ from the previous frame are written to the real terminal, eliminating flicker.

Constructor

ScreenBuffer(this._terminal)

Properties

Property	Type	Description
width	int get	Current buffer width.
height	int get	Current buffer height.
width	int get	Current buffer width.
height	int get	Current buffer height.

Methods

void writeAt(int row, int col, String text, {AnsiStyle? style})

Write [text] into the buffer at ([row], [col]) without touching the real terminal. An optional [style] is applied to every character.

void fillRow(int row, String text, {AnsiStyle? style, int startCol = 0})

Fill an entire [row] starting at [startCol] with [text], padding with spaces to the right edge.

void clear()

Clear the current buffer (fill with spaces).

void flush()

Flush only changed cells to the real terminal.

This is the key to flicker-free rendering: we compare each cell against the previous frame and only emit ANSI sequences for cells that differ.

void resize(int width, int height)

Handle a terminal resize.